Yeah, on my K8WE im running 2GBs -with 4 dims of 512mb each -which is 2 dims per CPU. I was told that this was recomended for best performance over using 2 1GB dims. I suspect this has something to do with the fact that the processors (opteron 270s) are dual core as well. So each core on the system has 512mbs. Im not sure how this all works, but i have seen some pre-configured K8WE systems with 4GBs of ram -so that would be four 1GB dims per core. But Ive also heard windows dosnt take advantage of more than 3GBs of ram so I dont understand how this is helpful. If anyone knows; please explain.